git.delta.rocks / unique-network / refs/commits / fe5dd90e2b65

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617pub mod sponsoring;1819use fp_evm::PrecompileResult;20use pallet_common::{21	CollectionById,22	erc::CommonEvmHandler,23	eth::{map_eth_to_id, map_eth_to_token_id},24};25use pallet_fungible::FungibleHandle;26use pallet_nonfungible::NonfungibleHandle;27use pallet_refungible::{RefungibleHandle, erc::RefungibleTokenHandle};28use sp_std::borrow::ToOwned;29use sp_std::vec::Vec;30use sp_core::{H160, U256};31use crate::{CollectionMode, Config, dispatch::Dispatched};32use pallet_common::CollectionHandle;3334pub struct UniqueErcSupport<T: Config>(core::marker::PhantomData<T>);3536impl<T: Config> pallet_evm::OnMethodCall<T> for UniqueErcSupport<T> {37	fn is_reserved(target: &H160) -> bool {38		map_eth_to_id(target).is_some()39	}40	fn is_used(target: &H160) -> bool {41		map_eth_to_id(target)42			.map(<CollectionById<T>>::contains_key)43			.unwrap_or(false)44	}45	fn get_code(target: &H160) -> Option<Vec<u8>> {46		if let Some(collection_id) = map_eth_to_id(target) {47			let collection = <CollectionById<T>>::get(collection_id)?;48			Some(49				match collection.mode {50					CollectionMode::NFT => <NonfungibleHandle<T>>::CODE,51					CollectionMode::Fungible(_) => <FungibleHandle<T>>::CODE,52					CollectionMode::ReFungible => <RefungibleHandle<T>>::CODE,53				}54				.to_owned(),55			)56		} else if let Some((collection_id, _token_id)) = map_eth_to_token_id(target) {57			let collection = <CollectionById<T>>::get(collection_id)?;58			if collection.mode != CollectionMode::ReFungible {59				return None;60			}61			// TODO: check token existence62			Some(<RefungibleTokenHandle<T>>::CODE.to_owned())63		} else {64			None65		}66	}67	fn call(68		source: &H160,69		target: &H160,70		gas_limit: u64,71		input: &[u8],72		value: U256,73	) -> Option<PrecompileResult> {74		if let Some(collection_id) = map_eth_to_id(target) {75			let collection = <CollectionHandle<T>>::new_with_gas_limit(collection_id, gas_limit)?;76			let dispatched = Dispatched::dispatch(collection);7778			match dispatched {79				Dispatched::Fungible(h) => h.call(source, input, value),80				Dispatched::Nonfungible(h) => h.call(source, input, value),81				Dispatched::Refungible(h) => h.call(source, input, value),82			}83		} else if let Some((collection_id, token_id)) = map_eth_to_token_id(target) {84			let collection = <CollectionHandle<T>>::new_with_gas_limit(collection_id, gas_limit)?;85			if collection.mode != CollectionMode::ReFungible {86				return None;87			}8889			let handle = RefungibleHandle::cast(collection);90			// TODO: check token existence91			RefungibleTokenHandle(handle, token_id).call(source, input, value)92		} else {93			None94		}95	}96}